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Note 4 - Estimated Liquidation and Operating Costs Net of Estimated Receipts (Tables)
 12 Months Ended
Dec. 31, 2020
Notes Tables  
Liquidation Basis of Accounting, Change in Liability for Estimated Costs in Excess of Estimated Receipts [Table Text Block]
   
January 1,
2020
    
Expenditures/
(Receipts)
    
Remeasurement of
Assets and Liabilities
    
December 31,
2020
  
Assets:
                                
Estimated rents and reimbursements
   $
4,309,328
     $
(2,432,540
 )   $
3,049,860
     $
4,926,648
  
Liabilities:
                                
Property operating costs
    
(2,594,954
 )    
1,506,037
      
(1,972,487
 )    
(3,061,404
 )
Capital expenditures
    
(474,133
 )    
13,495
      
-
      
(460,638
 )
Land entitlement costs
    
(1,847,127
 )    
1,013,966
      
(657,538
 )    
(1,490,699
 )*
Corporate expenditures
    
(6,196,551
 )    
2,139,978
      
(2,287,769
 )    
(6,344,342
 )
Selling costs on real estate assets**
    
(3,497,200
 )    
-
      
439,203
      
(3,057,997
 )
Retention bonus payments to directors, officers and employees**
    
(4,680,518
 )    
-
      
1,767,038
      
(2,913,480
 )
Less prepaid expenses and other assets
    
603,679
      
245,293
      
-
      
848,972
  
Liability for estimated liquidation and operating costs net of estimated receipts
   $
(14,377,476
 )   $
2,486,229
     $
338,307
     $
(11,552,940
 )
   
January 1,
2019
    
Expenditures/
(Receipts)
    
Remeasurement of
Assets and Liabilities
    
December 31,
2019
  
Assets:
                                
Estimated rents and reimbursements
   $
3,418,285
     $
(2,600,047
 )   $
3,491,090
     $
4,309,328
  
Liabilities:
                                
Property operating costs
    
(2,084,955
 )    
1,536,010
      
(2,046,009
 )    
(2,594,954
 )
Capital expenditures
    
(1,130,844
 )    
616,230
      
40,481
      
(474,133
 )
Land entitlement costs
    
(1,468,474
 )    
1,422,192
      
(1,800,845
 )    
(1,847,127
 )
Corporate expenditures
    
(4,904,367
 )    
2,167,814
      
(3,459,998
 )    
(6,196,551
 )
Selling costs on real estate assets*
    
(2,437,076
 )    
-
      
(1,060,124
 )    
(3,497,200
 )
Retention bonus payments to directors, officers and employees*
    
(1,984,733
 )    
14,573
      
(2,710,358
 )    
(4,680,518
 )
Less prepaid expenses and other assets
    
397,854
      
205,825
      
-
      
603,679
  
Liability for estimated liquidation and operating costs net of estimated receipts
   $
(10,194,310
 )   $
3,362,597
     $
(7,545,763
 )   $
(14,377,476
 )